Very nice game! My only complaint is that I had a hard time seeing the thin missiles the hexagons shoot and died many times because I couldn't see them.
I really liked the first half of the game. The second half has 2 major problems : it's too easy and the colors are too close together : if you are colorblind you can only find out which is which by trial and error.
It could've been funny if it wasn't possible for the snake to go straight ahead and leaving it collect all the red spots until the board is completely black.
Please make a button or something to toggle the graphics quality ! It is a good game, but it is running so slowly... And the cannons need to be fixed too, sometimes they fired right away, and sometimes it seemed they never would, and then I had to restart the level even though I was doing well until the ball entered the cannon.